S-25C320A0I-I8T1U3 Просмотр технического описания (PDF) - Seiko Instruments Inc

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S-25C320A0I-I8T1U3

SPI SERIAL E2PROM

Seiko Instruments Inc 

Rev.4.2_02_H

SPI SERIAL E2PROM

S-25C320A/640A

 Instruction Set

Table 16 is the list of instruction for the S-25C320A/640A. The instruction is able to be input by changing the CS pin “H”

to “L”. Input the instruction in the MSB first. Each instruction code is organized with 1-byte as shown below. If the

S-25C320A/640A receives any invalid instruction code, the device goes in the non-select status.

Table 16 Instruction Set

Instruction Code

Address

Data

Instruction

Operation

SCK Input Clock

1 to 8

SCK Input Clock SCK Input Clock SCK Input Clock

9 to 16

17 to 24

25 to 32

WREN

Write enable

0000 0110

−

−

−

WRDI

Write disable

0000 0100

−

−

−

RDSR

Read the status register

0000 0101

b7 to b0 output *1

−

−

WRSR

READ

Write in the status register

Read memory data

0000 0001

0000 0011

b7 to b0 input

A15 to A8 *2

−

A7 to A0

−

D7 to D0 output *3

WRITE

Write memory data

0000 0010

A15 to A8 *2

A7 to A0

D7 to D0 input

*1. Sequential data reading is possible.

*2. In the S-25C320A, the higher addresses A15 to A12 = Don’t care.

In the S-25C640A, the higher addresses A15 to A13 = Don’t care.

*3. After outputting data in the specified address, data in the following address is output.

11

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